General Motors have released details on stage four of their HydroGen fuel cell vehicle development program

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September 14, 2007 General Motors have released details on stage four of their HydroGen fuel cell vehicle development program. Over the next 18 months, over 100 fuel-cell powered HydroGen4 vehicles will be tested internationally in a range of driving environments and conditions. The question remains though, is Hydrogen likely to become a viable alternative to petrol?